erreur d'exception "internal compilation Error"

bjr,
j'ai telecharger le code source pour les swingx

voila mon code

Code:

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package org.jdesktop.swingx;
 
import java.awt.Font;
import javax.swing.*;
 
public class JXHeaderDemo extends JPanel {
    public JXHeaderDemo() {
        setLayout(new VerticalLayout(3));
        add(new JXHeader());
 
        JXHeader header = new JXHeader("A Custom JXHeader",
                "This JXHeader sets a custom title, an icon, and a custom description.\n" +
                "Multiple lines can be specified by using a \\n control character.\n" +
                "You may even specify more than two lines using this technique.",
                new ImageIcon(JXHeaderDemo.class.getResource("resources/header-image.png")));
        add(header);
 
        header = new JXHeader("This JXHeader uses a different font",
                "By calling setFont(), I can replace the font used by this\n" +
                "JXHeader. Note, however, that it affects both the title and" +
                "the description.", null);
        header.setFont(new Font("Times New Roman", Font.PLAIN, 14));
        add(header);
    }
 
    public static void main(String[] args) {
        SwingUtilities.invokeLater(new Runnable() {
            public void run() {
                JFrame frame = new JFrame();
                frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
                frame.setLocationRelativeTo(null);
                frame.setSize(400, 400);
                frame.add(new JXHeaderDemo());
                frame.setVisible(true);
            }
        });
    }
 
}

mais lors de l'execution, il genere l'erreur suivant

Code:

Error: Internal compilation error, terminated with a fatal exception

pour la compilation aucune erreur n'est affichée en rouge ds jdeveloppper
pouvez vous m'aider pour resoudre ce probleme